Member for an image forming appratus

Patent metadata

Field	Value
Publication number	US-10466627-B2
Application number	US-201715417323-A
Country	US
Kind code	B2
Filing date	Jan 27, 2017
Priority date	Feb 10, 2016
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

Member for an image forming apparatus having an outer layer that includes polyethylene glycol and a polyether ester amide having therein a structural unit of polyethylene glycol.

First claim

What is claimed is:

1. A member for an image forming apparatus comprising an outer layer, wherein the outer layer comprises:
1-15 weight % of a polyether ester amide having a structural unit of polyethylene glycol therein, and
1 μmol/g to 25 μmol/g of polyethylene glycol,

each based on the total weight of the outer layer,
said outer layer further comprising:
a thermoplastic resin, and
a conductive filler.

2. The member for an image forming apparatus of claim 1 , wherein the outer layer comprises 1 μmol/g to 15 μmol/g of the polyethylene glycol.

3. The member for an image forming apparatus of claim 1 , wherein the outer layer comprises 1 μmol/g to 8 μmol/g of the polyethylene glycol.

4. The member for an image forming apparatus of claim 1 , wherein the polyether ester amide has a melting point of 200° C. to 230° C.

5. The member for an image forming apparatus of claim 1 , wherein the polyether ester amide has a melting point of 210° C. to 230° C.

6. The member for an image forming apparatus of claim 1 , wherein:
the polyether ester amide is a crystalline resin, the thermoplastic resin is a crystalline resin, and wherein:
100≥ Tc 1− Tc 2≥5,

where Tc1[° C.] is the crystallization temperature of the polyether ester amide and Tc2[° C.] is the crystallization temperature of the thermoplastic resin.

7. The member for an image forming apparatus of claim 6 , wherein
100≥ Tc 1− Tc 2≥35.

8. The member for an image forming apparatus of claim 1 , wherein the conductive filler is a carbon black.

9. The member for an image forming apparatus of claim 1 , wherein the thermoplastic resin is a polyvinylidene fluoride.

10. The member for an image forming apparatus of claim 1 , wherein the member for an image forming apparatus is an intermediate transfer roller.

11. The member for an image forming apparatus of claim 1 , wherein the member for an image forming apparatus is an intermediate transfer belt or a second transfer belt.

12. The member for an image forming apparatus of claim 1 , wherein the member for an image forming apparatus is a second transfer belt.

13. The member for an image forming apparatus of claim 1 , wherein the member for an image forming apparatus is a paper conveyance belt.

14. A method of producing the member for an image forming apparatus of claim 1 , comprising melting and kneading a composition comprising the polyether ester amide, the thermoplastic resin and the conductive filler, and extruding the melted and kneaded composition.

15. An image forming apparatus, comprising:
an image bearer;
an electrostatic latent image former to form an electrostatic latent image on the image bearer; and
a transferer to transfer a visible image onto a recording medium,
wherein the image forming apparatus further comprises the member for an image forming apparatus of claim 1 .

16. The member for an image forming apparatus of claim 1 , wherein the member for an image forming apparatus is a single-layered endless belt.

17. The member for an image forming apparatus of claim 1 , wherein the member for an image forming apparatus is a multi-layered member.

Assignees

• Fujii Hidetoshi
• Izutani Akira
• Miyakoshi Ryoh
• Ricoh Co Ltd

Inventors

• Fujii Hidetoshi
• Izutani Akira
• Miyakoshi Ryoh

Classifications

• B32B27/34

  comprising polyamides · CPC title

• G03G2215/00683

  Chemical properties · CPC title

• G03G15/162 Primary

  details of the the intermediate support, e.g. chemical composition · CPC title

• B32B27/285

  comprising polyethers · CPC title

• Y10T428/31725

  Of polyamide · CPC title